Differences of Nitrogen Efficiency in Henan Wheat Varieties

  • GUO Zhan-ling ,
  • SHEN A-lin ,
  • KOU Chang-lin ,
  • MA Zheng-hua ,
  • WANG Shou-gang
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  • Institute of Plant Nutrition Agricultural Resources and Environmental Science, Henan Academy of Agriculture Sciences, Zhengzhou 450002, China

Received date: 2008-12-21

  Online published: 2014-10-14

Abstract

A pot experiment with eight wheat varieties from Henan province was conducted to investigate the genotype differences in N efficiency at two rates of N supply. The results showed that the grain yields of all varieties increased significantly with the increase of nitrogen application.The increasing rates were related to the variety sensitivity to N.The difference of N efficiency was obvious among the 8 wheat varieties.The N efficience of Zhengmai 004,Taikong 6,Zhengmai 9023,Zhoumai 16 and Yumai 50 were very high at low N and high N.Path analysis indicated that N efficiency was determined mainly by N uptake efficiency at low N condition,but by both N uptake efficiency and N utilization efficiency at high N condition.

Cite this article

GUO Zhan-ling , SHEN A-lin , KOU Chang-lin , MA Zheng-hua , WANG Shou-gang . Differences of Nitrogen Efficiency in Henan Wheat Varieties[J]. Acta Agriculturae Boreali-Sinica, 2009 , 24(2) : 185 -189 . DOI: 10.7668/hbnxb.2009.02.038

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